F-35 Night Vision Carrier Landing (Video)

Could somebody tell me what that thing is on the F35, that stands up right behind the cockpit, at least on landing and, I think, part of takeoff???????

It's an inlet for air to assist with its STOL/VTOL abilities.

God bless these volunteer Americans who accepted the
challenge to protect our great country.
Thank you.
Gene
Marines 66/71
DMZ 68'

wing length too short for low level turning in ground troop support.

That doesn't damage the deck??